[BUG] Notification alert is reappearing after dismiss.

[jiridostal]

Describe the bug
When the notification is displayed and dismissed, redirecting to other page will cause the notification to appear again. This process duplicates the notifications multiple times and causes flooding by alerts.

To Reproduce
Steps to reproduce the behavior:

1. Dispatch "@@INSIGHTS-CORE/NOTIFICATIONS/ADD_NOTIFICATION" action.
2. Dismiss the notification or wait for it to disappear
3. Navigate to other page withing single page APP
4. See notification again

Expected behavior
No reappearing of the notification

Desktop (please complete the following information):

• OS: Fedora 28
• Browser: Firefox
• Version: 64

Additional context
Should not be Vulnerability specific thing as I tried to reproduce using different apps and the behavior was identical.

[jiridostal]

Could this be addressed please? This bug makes notifications unusable at all and there is no other standard way to let the user know that something went wrong.